Electron Configuration

& Orbital Notation

By Quiana Rios

Page 6 Electons in atoms

Steps to write Electron Configuration

The atomic number greater than 18, the sub levels begin to fill out of order. A good approximation of the order of filling can be determined by using the diagonal rule. An easy way to also find the Electron configuration is by counting the exponents.

Example

Steps to write Obital Notation

Guns is the scientist that came up with the "school bus rule".

Electrons fill empty orbitals before pairs(seats).

Lowest energy to highest energy, adding adding electrons can change the energy of the orbital. Full orbitals are absolute best solution, However half filled orbitals have a lower energy and are next best.

Makes them more stable.

Changes the filling order.